Average Co-Inventor Count = 3.43
ph-index = 1
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Tonen Corporation (2 from 141 patents)
2 patents:
1. 5603861 - Electroviscous fluid mixed with esterified silica fine particles and
2. 5387370 - Electroviscous fluid